EMC tutorials - Electric field shielding

#121 In this video I continue looking at shielding by analyzing how an effective electric field shield needs to be built. I look at how this sort of shield needs to be built - how its effectiveness can be enhanced and then I perform some measurements to verify the theory behind it.

Further reading:
Electromagnetic Compatibility Engineering, H. W. Ott, 2009 - Cap 6

Related topics:

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[bigacsiga]

These basic experiment videos are very unique ones. We all learnt it on paper, but these tests are very impressive. I really like it! Thank you!

[deadbugengineering]

I wish YouTube recommendation algorithms would take the educational quality into account to promote channels like this one. Anyways, I'm so glad I found this channel!

[joshuakim]

Excellent tutorial! It clarifies the ambiguity between electric and magnetic field shielding. Thanks for your effort to make this.

[roberttso]

Very nice tutorial on 1st principals of shielding. Thank you!

[seshansesha]

Thank you for keeping the presentation simple and easy to make the subject understandable....best videos and presentation i have seen in the EMC world...Thank you

[Chillschrob]

Very good content. The practical approach is very interesting! Keep up the good work!

[EJEuth]

You and your channel are great! And this video is another outstandingly good video-class for these concepts you presented - magnetic (previous) and electric (this) field shielding.
I’m curious how certain vídeos as these ones were made, the setup and their making-off.
I believe we all would appreciate very much if you could prepare some “making-off” videos, showing the preparation of the demonstrations, the selection of instruments, how they were adjusted/aligned, etc.
Thank you for demystifying, simplifying and elucidating for us several topics.

[patim]

around 5:00, The PCB material forms a dielectric that makes it a capacitor. That is why the insertion loss gets lower. Better test it with only a copper plate. I sometimes make capacitors for RF filters from double sided PCB. But a very nice serie of experiments. Well done

[thiskidismlgtv]

Great video, excelent explanations. Thank you!!
PS. Mulțumiri, și salutări din Texas ;)

[tobyking]

Great vid, thanks very much. Great job

[p_mouse]

Great video 👍🏻
Maybe it's worth mentioning that the return path of the ground also highly effects the attenuation of the signal.
Ideally you want to make that as short and direct as possible to the source (the sending plate in this case)
Especially in the MHz region.

[hategekimanamathew]

thanks for this you really answered my question i gat

[paulp]

Another fascinating, although simple, experiment. The results were not a surprise, but I have never seen the results with my own eyes (or taken the time to do it!) So, thanks Fesz. I do suspect that the thin metal shields (at 3:03) will not attenuate H fields too well, but I wonder if you would be interested to investigate that claim?

[JoshuaSHanson]

So tin foil hats actually amplify the mind control beams?

[mumbaiverve]

Excellent series on shielding. Can it be fair to assume that its always better to shield the cage, so that it will provide optimum protection for both magnetic and electric fields ? Also can you demo sources of magnetic fields and electrical fields ?
And finally if you could show the effects of using a shielded cable and non shielded cable vis-a-vis interference. TIA and look forward to more videos !!

[MrBanandlee]

It would be great if you can comment on how to provide EMI/EMC shielding for INS module where roll pitch and yaw are measured. And only yaw value gets disturbed a lot when testing is carried on a Rate Table.

[lambda]

An intuitive/Naive question would be what happens if you put a better insulator between them.
how would dielectric permittivity and dielectric loss affect the setup?

[Scrogan]

Noticed you’re using SMAs for everything after BNC adapters, while I’ve been just using BNCs all the way through. Are SMAs better somehow? Or cheaper? They’re smaller and easier to board-mount, the latter of which is rather appealing.

[lupoal]

bravo! very interesting video as usual!
one question: grounding lane is known in hi-fi world also as potential source of noise, running in the ground because of all oher appliance connected to that... how to be sure the noise we will capture with our shield will go from he shield into the ground and, at the same time, the grownd connection will not draw into the equipment we want protect noise itself? RC cell between our shield and ground plug in the wall? which values? ... a video about that I think will probably be quite appreciated by many people. Thks in advance :)

[andrewphillip]

How do shield enclosures usually get connected to circuit board ground? I’ve never payed much attention to this in equipment I’ve opened up, but based on this experiment I’m guessing a simple jumper wire would be completely ineffective.